@CobaltVelvet lol, good job! you described that accurately, unless, it doesn't actually work that way. When a post is public, it's publically accessible to other instances, even when people aren't logged in on that instance, however I dk how easy it is for google and such to index it. Then, replies to a thread are unlisted by default, which means they aren't public, which means it would take a considerable amount of effort to index that stuff. Possible, but not likely to be done. But yeah, overall good take of the entire situation, even so, what's public is public to everyone in most cases, unless it's chat rooms aka matrix.